A survey shows that the average insurance cost to a company per employee per hour is $1.84

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A survey shows that the average insurance cost to a company per employee per hour is $1.84 for managers and $1.99 for professional specialty workers. Suppose these figures were obtained from 35 managers and 41 professional specialty workers and that their respective population standard deviations are $0.38 and $0.51. Calculate a 98% confidence interval to estimate the difference between the mean hourly insurance costs per employee for these two groups.

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Business Analytics And Statistics

ISBN: 9780730363330

1st Edition

Authors: Ken Black, John Asafu Adjaye, Paul Burke, Nelson Perera, Carl Sherwood, Saleh A. Wasimi

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